I am trying to access Buttons on my web form from the c# code to set the command Argument and click event handler. I am getting following two errors.
Error 1
The best overloaded method match for 'System.Web.UI.ControlCollection.this[int]' has some invalid rguments
Error 2
Argument '1': cannot convert from 'string' to 'int'
Is it possible to accessing a HTML button's value from code behind file?
View 2 RepliesHere is what im trying to do I want to, from my c# code-behind, get the code between 2 <asp:Content> tags that are located in one of my .apsx pages.
View 8 RepliesSeem to be having trouble getting ahold of an asp:Image I placed on an .aspx page in my code behind. I'm trying to set the Visible property to "true" programatically.
What am I doing wrong here?
.cs (see lines 81-87):
[Code]....
And .aspx:
[Code]....
I was able to acces an HTML element from my c# code this way:
Page.Request.Form["Name"].ToString(), where name was an html element:
<input id="Name" style="z-index: 102;" type="file">
Now that I put this html inside a Tab containe (subpanel) the Page.Request.Form["Name"].ToString() fail, actually while I was debugging I could not find this element inside Page.Request.Form.
maybe there is another way of accessing the Html element from my c# code?
i have a <div> named 'mydiv' on a web page and have set it's runat property as <server> so it is visible within
my vb.net server side code.
i can see the mydiv within the server side code.
my question:
how do i adjust the height/style of the <div> withion the vb.net code so that whe the page is posted back the new height/style settings apply. how do i get to the style properties server side?
OnClick event of a button inside and updatepanel doesn't fire
[Code]....
I have got a Wizard with StartNavigationTemplate, StepNavigationTemplate and FinishNavigationTemplate. All of them have a button with ID btnSave while the FinishNavigationTemplate has another button with id btnFinish. I am trying to save draft while Save is clicked and Submit when submit is clciked.Â
My problem is that I can't figure out how to access the ID of the button on which I am basing my conditions. I tried the following code:
Dim btnSaveForm As Button = CType(sender, Button)
Dim btnSave As Button= TryCast(form1.ActiveStep.FindControl("btnSave"), button)
Dim btnFinish As button= TryCast(form1.ActiveStep.FindControl("btnFinish"), button)
Is that the correct way of accessing the button in a wizard footer template or am I doing it wrong?
I have a page where i am creating a number of <span> elements using clientside code.
I am creating the elements using jquery like this
[Code]....
But this returns a null object everytime. I have tried this code on a span that is on the page at the beginning and it works so i guess its something to do with how im creating the control dynamically.
I've been playing with a certain detailsview for most of last week. This particular control is located within a panel that is hidden until a user clicks a linkbutton on a gridview. Then the panel's visible property is set to true and the detailsview is populated based on the commandargument passed through the link button. What I've discovered is that with each postback, the datakey or control parameter, still not sure which or if both, is lost. I've discovered a lot about ViewState and how controls work and am a bit surprised that something as common as using a detailsview within a gridview wouldn't be handled better than it is now. I have been able to get the proper information to build a correct select statement when the user decides to edit a record. I am now working on an update statement, but for some reason while I have the right key to update the right record, I am unable to access the user-generated data that was entered in the details view.
For instance, I select record with ID of 1 in the gridview. It pulls up the detailsview and I can view it. I then click edit. The correct record is still there. (It was previously going to default). When I enter new text in a textbox and click update, the app still knows I am working with record #1 but doesn't seem to be able to find the textbox control. I have currently hard-coded a value into the field just to see if I could actually get the record to update and it did. I am using an OnInit to cause the sub to run and think this might be the problem. However, I have been unable to find a better way around this.
Here is the sub that executes on the OnInit() of the detailsview:
Protected Sub notes_binding()
If notesDetail.CurrentMode = DetailsViewMode.Edit Then
sqlNotesUpdate.UpdateCommand = "UPDATE [Oilchange_Notes] SET [notes] = '" & CType(notesDetail.FindControl("notes"), Textbox).Text & "' WHERE [vehicle_id] = " & Session("unitNumVal")
sqlNotesUpdate.UpdateCommandType = SqlDataSourceCommandType.Text
sqlNotesUpdate.Update()
End If
sqlNotesUpdate.SelectCommand = "SELECT * FROM [Oilchange_Notes] WHERE ([vehicle_id] = " & Session("unitNumVal") & ")"
End Sub
And this is the error I get: Object reference not set to an instance of an object. If I'm correct about why it's not pulling the actual value or even acknowledging the control exists and is actually 'notes' (it is), then at would point would be the best to place this code?
I'm currently running with this.
[Code]....
Works find on initial page load, but gives me "Object variable or With block variable not set."
on this like "ColourHex = e.Item.DataItem("ColourHex")" on postback?
on my default.aspx page, i have one dropdownlist (which has book types as values e.g. small books, medium books etc.). Then one textbox. And one button named 'Search'. On button click the datagrid shows result by filtering table data with book type and search string that user enter in textbox.
So on 'Search' button click, i want to load the same page with result but with query string like 'Default.aspx?booktype=small' (using response.redirect) if user selects small in dropdown list. The problem is when i click 'Search' button and the page gets loaded again I cannot access dropdownlist values and search string that user has entered. It takes null only when I use,
[Code]....
I have a class that derives from System.Web.UI.Page and have set my pages to derive from this custom page class instead of Page. At runtime, the controls are never initialized and throw a NullReferenceException. I've changed some class names and namespaces in the pasted code to protect the innocent. The only thing that I currently override in my PageBase is OnPreLoad and I do call the base.OnPreLoad. I'll eventually add more functionality to this PageBase but for now all that it has is this:
[Code]....
I've tried putting this into a class library (with System.Web referenced) and I've also tried moving the class into the web application and had the same results either way. As another strange twist, I have another class with derives from PageBase called IndexPageBase and it doesn't have this problem:
[Code]....
[Code]....
[Code]....
I have a GridView (it could just as easily be a ListView if the latter is easier).
I have a Button completely outside of the GridView.
I want to access the cell values in the GridView from the Click event handler of the Button.
Iam using a radio button in a Gridview. I want to check whether it is checked or not. If it is checked i want to pass one value or if it is unchecked i want to pass another value. But even when i checked the radio button, it is still showing unchecked in the Debugger. How to check whether it is checked or not. Following is the code iam using:
[Code]....
I've adde a WebUserControl inside Repeater control. My WebUserControl consists of basically three controls: a CheckBox, a HyperLink, and some Label control. Plz have a look:
[Code]....
I've some Buttons outside the Repeater control. Now I want to select individual row through CheckBox and process it on Button (outside Repeater) Click.
First of all, I´m new to asp.net.
I have this .aspx page in my Visual Studio 2008 web project solution, with a media player control and a button which invokes it and starts playing a file:
[code]
line is added to the .aspx page. When the page is now loaded, and the button from before that used to work gets clicked, i get a Javascript error saying that 'Player' is not defined.
I created a user control in Asp.Net which I populate with <asp:Table id = "...." /> this table has columns that contain dropdownlists, textfields and other web controls. In the code behind I am not able to access these web controls, is there a way I can access them. or I shouldn't be doing that in the code behind of the user control? here is my ascx code markup:
<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="MarriageControl.ascx.cs" %>
<%@ Register assembly="BasicFrame.WebControls.BasicDatePicker" namespace="BasicFrame.WebControls" tagprefix="BDP" %>
<asp:TextBox ID = test runat = "server" />
<asp:Table ID = "marriageInfoTable" runat = "server" Caption="معلومات الزواج"
CellPadding="2" CellSpacing="2" Width="979px" Height="164px">
<asp:TableRow runat="server">
<asp:TableHeaderCell runat = "server" Text = " " />
<asp:TableHeaderCell runat = "server" ID = "husbandHeader" Text = "الزوج" HorizontalAlign = "Right" />
<asp:TableHeaderCell runat = "server" ID = "wifeHeader" Text = "الزوجة" HorizontalAlign = "Right" />
</asp:TableRow>
<asp:TableRow runat="server">
<asp:TableCell runat = "server" Text ="الاسم الرباعي" />
<asp:TableCell runat = "server">
<asp:TextBox runat ="server" ID = "fullNameHusbandTextBox" Height = "30px" Width = "250px" Font-Bold = "true" Font-Size = "20px"/>
</asp:TableCell>
<asp:TableCell runat = "server">
<asp:TextBox runat ="server" ID = "fullNameWifeTextBox" Height = "30px" Width = "250px" Font-Bold = "true" Font-Size = "20px"/>
</asp:TableCell>
</asp:TableRow>
<asp:TableRow runat="server">
<asp:TableCell ID="dateOfBirthCell" runat = "server" Text ="تاريخ الميلاد" />......
i have a unordered list(HTML) whose style i am changing conditionally in the code behind
<ul class="steps">
<li class="" id="step1" runat="server">Step 1</li>
<li class="step2" id="step2" runat="server">Step 2</li>
<li class="step3" id="step3" runat="server">Step 3</li>
<li class="step4" id="step4" runat="server">Step 4</li>
</ul>
in the code behind iam doing something
step1.Attributes["class"] = "step1";
step2.Attributes["class"] = "step2New";
something like this
If iam using internal styles then its working fine but when iam taking the same style sheet to external file then it is not working
Is it because i am assigning attributes using id i don't know
the css file is some what like this
[Code]....
I have a code behind page that has several method; one of them is a page method.
[WebMethod]
public static void ResetDate(DateTime TheNewDate)
{
LoadCallHistory(TheNewDate.Date);
}
protected void LoadCallHistory(DateTime TheDate)
{ bunch of stuff }
The method LoadCallHistory works fine when the page loads and I can call it from other methods inside the page. However, in the web method part, it gets underlined in red with the error "an object reference is required for the non-static field".
How do you access functions from the page method part of the code?
I have a few pages in my web application where I would like to be able to use the code-behind of a master file, but not 'inherit' any of the other stuff like asp/html markup etc.
View 5 RepliesI know in standard VB.Net development, you can access any form field from within a module class but I'm not sure how to do it using Web Forms.Here is my scenario:I have a Module.vb where I am putting all my Database Functionality. In each of my functions, I'm using a Try Catch construct.
View 7 RepliesI want to use the setting stored in the web.config file in my vb code, but don't know how to reference them.
More specifically I want to access the Host name, username and password in the smtp settings to send an email. My web.config is
[code].....
i have a link button which i have created dynamically and added it to a div i want to access this link button in some other function in code behind how to do this
View 3 RepliesI need to display a control consistently across a set of pages. So I'm using a MasterPage to do that in ASP.NET/C#. However I also need to programmatically access this control, mostly provide options to view/hide depending on whether the controls checkbox is clicked.
Here is the Source for the MasterPage
<div id="verifyInitial" runat="server">
<asp:CheckBox ID="chkInitialVerify" runat="server"
oncheckedchanged="chkInitialVerify_CheckedChanged" />
I agree that my initial data is correct.
</div>
<div id="verifyContinuous" runat="server">
<asp:CheckBox ID="chkContinuousVerify" runat="server"
oncheckedchanged="chkContinuousVerify_CheckedChanged" />
I agree that my continuous data is correct
</div>
Now in the code behind I want to perform the following operations. Basically if a person clicks on the checkbox for the initial div box, then the initial box disappears and the continous box shows up. However it seems that the code behind for the MasterPage does not activate whenver I click on the checkbox. Is that just the way MasterPages are designed? I always thought you could do add some sort of control functionality beyond utilizing the Page Load on the Master Page.
protected void chkInitialVerify_CheckedChanged(object sender, EventArgs e)
{
verifyContinuous.Visible = true;
verifyInitial.Visible = false;
}
protected void chkContinuousVerify_CheckedChanged(object sender, EventArgs e)
{
verifyContinuous.Visible = false;
}